I.e there is a large directory of PDF files and the publisher makes them available on his website. He does not charge for them and they are available without any requirements for authentication ...
We use Joomla with Remository to store and manage publications (don't ask me why). Files (PDF) are stored in a database and can be accessed via dynamic, rewritten links of the form ...
I have several .pdb files, which should be viewed in my website by clicking a link on a page. But when a pdf file opens, in the address bar it is visible the directory where all .pdf files reside. SO ...